题目内容
Do you know pigeons(鸽子)? They are a kind of birds. They are in white and grey. Some people say they are not beautiful but they are cute and smart. Many people keep them as pets. Why do people say pigeons are clever? Because pigeons can take letters from one place to another. And they know the way home. We often see the picture of a pigeons with an olive branch(橄榄枝) in its mouth. We call them peace pigeons. They are the symbol of peace.
1.Pigeons are a kind of ______.
A. food B. vegetables C. birds
2.Pigeons are in _____.
A. black and grey
B. black and white
C. grey and white
3.Many people keep pigeons as .
A. interests B.flowers C. pets
4.Pigeons are the symbol of ______.
A. Peace B.flags C. luck
5.Which of the following is TRUE?
A.Pigeons can’t fly.
B. Pigeons aren’t birds.
C.Pigeons can take letters from one place to another.
Different vitamins are found in different foods. Then which foods should be eaten to keep us healthy? Let's look at some important vitamins for the answer.
Vitamin A helps to protect skin from becoming dry. It is also helpful to the eyes. Without vitamin A, you cannot see well in darkness. Vitamin A is found in animal liver and yellow part of eggs. Sweet potatoes, carrots and other dark colored fruit and vegetables have something that the body can change into vitamin A. |
Vitamin B changes foods into energy and helps the heart and nervous system (神经系统) to work smoothly. Without it, we will be weak and will not grow. It is found in grains and other foods like beans, nuts, meat and fish. Vitamin B helps to produce red blood cells. It is found in foods like eggs, meat, fish, milk and green leafy vegetables. |
Vitamin C is needed for strong bones and teeth, and for healthy blood vessels (血管). It also helps wounds to heal (愈合) quickly. The body stores little vitamin C, so we must get it in foods like oranges, and cabbage. |
Vitamin D increases the levels of calcium (钙) in the blood. Calcium is needed for verve and muscle (肌肉) cells to work normally, as well as to build strong bones. Fish liver oil has vitamin D. In some countries, milk producers add vitamin D to milk so that it will be good for children. |
1.Without ________, we cannot see well in darkness.
A. vitamin A B. vitamin B
C. vitamin C D. vitamin D
2.According to the passage, vitamin B can be found in ________.
A. fish liver oil
B. oranges and cabbage
C. grains, meat and fish
D. animal liver and eggs
3.From the passage, we know that vitamin C is good for ________.
A. blood vessels B. the heart
C. the skin D. nerve and muscles
4.Some milk producers add vitamin D to milk mainly to help children to ________.
A. have good eyesight
B. get enough calcium
C. produce blood cells
D. heal wounds quickly
5.According to the passage above, which of the following is “TRUE”？
A. We can get vitamins from everything.
B. We can live healthily with few vitamins
C. Vitamins are not important to our health.
D. Different vitamins help us in different ways.